Self-breaking canopy-type door



Jan. 6, 1931. R. s. PEELLE SELF BREAKING CANOPY TYPE DOOR .2 Sheets-Sheet 1 Filed Oct. 2, 1929 n 1 g lllllllllllii I. iufiun 14 a A ATTORNEY.

Jam. 6, 1931. R55. PEELLE SELF BREAKING CANOPY TYPE DOOR Filed Oct. 2, 1929 2 Sheets-Sheet 2 Bylaw if; ATTORNEY.

, Patented Jan. 6, 193 1 UNITED" STATES PATENT oer-ICE S. PEELLE, OF HOLLIS, NEW YORK, ASSIGNOR TO THE PEELLE COMPANY, 01

BROOKLYN, NEW Yoa'x', A conronn'rron or new YORK SEW-BREAKING oANo'rY-rnn noon I Application filed October 2, i929. Serial No. 886,789.

My invention relates to self-breaking canopy type doors, and more particularly to a door of the canopy type in which, when the latch mechanism 1s released, the weight of g the door itselfwill cause an initial opening door section has always been sue that when 'tlons will break at their point of pivotalmovement thereof suflicient to avoid the neces'sity for the breaking of the joint between the foldable sections of the door by the application of force either manual or mechani' cal thereto.

Canopy type, bi-fold, or jack-knife, doors are old and well known in the building trades. Such doors usually consist of two sections, the upper of which is hinged above the lintel of a door opening, and the lower of which is hinged .to the bottom of the upper door. section. The manner of mountin the upper a door was closed, the two sections would hang in substantially vertical alinement, being suspended from the hinges connecting the upper section with the wall of a build- 1ng To ensure a tightcclosingof the door, it has been a common practice to force the two sections slightly beyond the vertical center of the hinged connections between the sections, but whether this ractice was followed or not, a door, when 0 osed, was ordinarily so set as to require the exercise of considerable strength to break the hinged joint between the two sections before opening power terweighted doors, and with doors, the movements of which were mechanically effected by what is known as a door operator. In fact, various devices have been suggested and used with the so-called automatic doors, or

those having a mechanical operator, by which of opening power to the door.

v The difficulties above referred to arise from the fact that when opening canopy doors, and during the full opening. movement, the load of the counterweight, or the power of the operator, is applied closely adjacent the whatever to start the two sections of the door inwardly of the opening at the hinged connection.

. ith the above conditions in mind, I have provided a door of the canopy type, in which the upper section is so mounted that it has a normal tendency to swing inwardly of the door, which normal tendenc is restrained by a latch mechanism when t e door is fully closed. As a result of this construction, when the latch mechanism is released, the two secconnection of their own accord, without the application of any force thereto by the operator, whether manual 'or mechanical, and thus permit the application of power to the door, whether by counterweights or by an operator, in a manner which will ensure a smooth, easy operation of the door.

Canopy doors are ordinaril used to close lar 0 door openings in ware iouses or like bu1 dings, and are fairl lar e, heavy structures. Consequently, w en 0 osing the door, the two sections will gather considerable momentum, even though they may be closely counterweighted, and hence, when closing the door, they will, of their own accord, overcome the normal tendency of the upper door section to swing inwardly of the opening to an extent to permit the automatic action of the latch mechanism, which is relied upon to normally prevent, such tendency when the door is closed.

In a door embodying the invention, the

construction is such as to further ease the 1 initial opening movement of the door by avoiding possible binding of the pivotal supports for the upper door section, which expedient will also facilitate a close fitting of the door and ease in the automatic closing and latching movement above referred to.

The door of my invention is preferably so constructed as to not only. avoid possible possibility of a persons fingers or hand being cal llght and squeezed between the two sections w en closing the door, the construction in 'fact being suchas tomake it impossible for any portion of the hand to accidentally enter the ga between the tw'odoor sections durin such nal closing movement.

A safety appliance may also be provided in the door, w ich will not automatically to prevent the falling of the door in the event of the breakage of the flexible connections, throughwhich the door is operated whether these connections are acted upon by a counterweight or a mechanical door operator.

It is also possible, with a construction of door embodying the invention, to provide a remote controlfor the latch mechanism, and to so proportion the load of the counterweight to that of the door as to ensure practicall an automatic opening movement of the oor when releasing the latch mechanism, under which condition the moving inertia 'of the door is relied upon to overcome the excess load of the counterweight 1n effecting a complete closing and latchin of the door.

Of course if an operator be use this remote control is particularly advanta eous.

It is not my intention to inc ude the oper-' ator feature in the form of invention herein shown and described.

The invention consists primarily in a selfbreaking canopy type door embodying therein a lurality of sections hinged together at one ace ofthe door, a ivotal support for the upper door section a jacent the lintel of the door openin the axis of which support is offset from t e plane ofthe door at the face thereof opposite the hinged connection between the sections, a keeper adjacent the door 'amb, a latch, member carried by one of the oor sections co-o erating with said keeper, said kee er an said latch member being capable 0 relative movement in setting and releasing the latch, guides above each jamb of the door, flexible connections passing about said uides and having a swivelling connection adjacent the bottom of the lower section, and means capable of exerting a pull upon said'flexible connections; and in such other novel features of construction and d combination of arts as. are hereinafter set forth and descri d, and more particulazly pointed out in the claims hereto append Referring to, the drawings, 4

Fig. 1 is a view, vertically and laterallycondensed, of a self-breaking canopy type door embodying the inventiona Fig. 2 is a section on the line 22 of Fig. 1,-

with portions broken away to disclose the I lintel, sill and one jamb of the door opening;

Fig. 3 is a section on the line 3-3 of Fig. 1; Fig. 4 is a sectional view upon a larger scale of the pivotal support'for the upper door section showin the automatic action of the door in dotted nes; and

and indicating in dotted lines the position 0 parts automatically assumed when releasing I the latch.

Like numerals refer to like parts throughout the several views.

In the embodiment of the invention shown in the drawings, wall angles 10 are mounted upon the wall '11 adjacent the jambs of the door opening, one of the flan s of these angles extending inwardly of t e building, as shown in Fig. 3. The door proper is composed of an upper section'12 and a lower section'13, the former of which is hinged in a particularrmanner abovethe lintel of the door opening, to be more full described hereinafter, and the latter of w ich is connected with the up er section by means of hinges 14 positioned at one face of the door, and so set as to permit the doors to fold in relation to each other durin the opening movement of the door, a con ition common to canopy ty .doors.

Above eac wall angle 10 is a ide sheave 15, about which sheaves pass 0 ains 16 or other suitable flexible means for controlling the movements of the door, which have a swivelling connection adjacent the bottom of the lower door section 13 at opposite sides thereof, so that the force'applied to the door ing commonly used or the Purpose of r-' mitting ease of movement 0 the door w on opening and closin same, notwithstanding the thrust of the gall of the building, incidental to canopy type oors.

The sheaves 15 may be attached to a metallic wall plate 18 secured to the wall 11 above the door opening. Also carried by this wall plate 18 are a plurality of hin lates 19, the number and dimensions of w ic will vary according to the size and weight of the oor.

Ordinarily, doors of the canopy type will be about two inches in thickness when metal sheathed wood panels are used, although with all metallic doors this thickness of course will be materially less. The door g is of the wood panel shown in the drawings ty v his socket ortion '20 of each hinge plate 19 is project from said plate so as to be offset from the plane'of the face of the door opposite that towhichthe hinges 14 are connected.

Secured to the upper door section 12 are oor sections toward the hinge straps 21, connected by means of binge ins 22 withthe socket portions 20, said mgestraps being oflset in ,relationto the face of the door against which they bear.

Preferably, the straps 21 are provided with elongatedenlarged openings 23,.the hinge pins 22 havin a drivmg'fit with the socket portion 20. e offset socket portion and similarly offset strap 21 afl'ord sufiicient play in the knuckle joint of the hinge to ensure a free turnin movement of the upper door sec the weight of this door section, and of theforce of. gravit to impart an initial opening movement to t e door sufiicient to break the joint at the hinge 14 between the sections 12 and 13. This is dueto the fact that the 0H- center pivotal support afforded by said hinges 20, 21 and 22 results in a normal tendency of the door section 12 to assumea position at an angle to the wall 10, the movement of thebottom portion of the section 12, as it assumes its angular position, bein away from the wall. The quantity of suc movement is determined by the extent to which the pivot 22 is offset in relation to the'vertical plane of the doorwhen it is closed and locked.

Adjacent each door jamb is a latch kee er 24, secured to the flange of an angle 25, WhlCh in turn is riveted orotherwise attached to the inwardly directed flange of the wall angle 10 with which thelatch member is associated. Thesekeepers 24 co-pperate with a latch mechanism carried by one of the door sections, the lower section 13 as shown in the drawings, for the purpose of preventing the action of gravity upon" the upper door sec tion 12, in the manner above described.

This-latch mechanism, in the form of the invention'shown,.comprises a rocking shaft 26 carried by the door section 13, having an operatng handle 27 centrally thereof and ofi'set latch members 28 adjacent theopposite ends of said bar and engageab'le with the keepers 24 respectively. The location of this latch mechanism is largely a matter of convenience, it being merely necessary that it be so located and so constructed that when the door sections 12 and 13 are in substantially vertical alinement, the latch members 28 will engagethe keepers 24 and prevent a gravity return movement of the section 12 and a responsive return movement of the lower section 13. I m

It is preferable to employ a latch member I at each side of the door, and a rock'shar't carrying the latch members'is used in order o latches.

Each keeper24 is provided with a striker 29 for ensuring the proper engagement of a latch member 28 with its cooperating keeper. Any suitable means, as astop 30, may be used for preventing 'such movement of the shaft 26 as might interfere with the proper latching action when the door reaches the fully closed position. v p

In the form of the invention shown, the

chainsor other flexible connections 16 are acted upon by a weight 31 substantially counterbalancing the weight of the door sections 12 and 13 and'their appurtenances. If desired, this weight 31' may slightly overbalance the door sections, so that when the latch mechanism is released, the opening of the door will be entirely automatic. With a close balancIng ofthe door and the counterweight, the release of the latch mechanism .with a slight force applied to the door, in-

doors by the counterweight. The doors otherwise .could not be maintained in the open position, but would close by. gravity with suflicient violence, by reason of the weight of the doors, to make the use of such doors impossible.

Doors in actual use, in some instances, have been equipped only with a. counterweight for developing the necessary operating power.

In other instances, electrical operators have been used with and without acountenweight.

Consequently, the counterweight shown in the drawings may be considered merely as a source of power for developing a desired lifting action upon the door sections in opening the. door,and checking downward movement of the sections by'gravity, in closing the door.

In some instances nism, and'under such conditions I provide a solenoid 32, the core-of which is with an extension 33 engageable wit the end of one of the latch members 28, the circuit for energizing said solenoid being controlled by a switch mechanism 34 conveniently located for the purpose.

It is a common practice, with. stevedores working around canopy doors, to assist the final closing movement of the door by pushit may be desirable to 7 provide a remote control for the latch mecharovided permit the simultaneous operation of both -likelihood of injury tothe hand or fingers the bottom edge of t e upper sectionand the by having them can ht and crushed between top edge of the lower section. To uard against possibility of such injury to wor en, the bottom of the upper section, and the top of the lower section are spaced apart when assembling the door, thus afiording clearance sufiicient to receive thefin ers, or a portion of the hand, without deve oping any severe crushing strains thereon. I supplement this action by providin a light metallic astragal secured to one of t e door sections and lapping the other, thus eflfectivel-y protecting the gap between the two doo'r sections and. preventing the accidental insertion of-the hand or fingers between these sections. I

The space between the two sections is indicated in the drawin s at 35, and the light yieldable astragal is s iown at 36. This astragal is carried by the lower door section and is spaced away from the face of the door a sufficient distance so that the upper edge thereof may be grasped by the hand and the door completely closed, without possibility of injury to the hand, particularly in view of the factthat the astragal will yield in the case of the en agement o the hand with the door panel.

aps like that shown at are not desirable in an outside door, and to minimize this undesirability and secure a better weather joint,

I rabbet both door sections, as shown in Figs.

2 and 5 of the drawings. This rabbettin of the door sections provides a better weat er joint and also permits the use of a wider orterfere wit the automatic breaking of the joint between the two sections, which is the main characteristic .of the invention.

Instances have been known where the chains 16 become detached from the counterweight, or break. Ifisuch should occur, the

door'would sim ly drop, and anyone struck thereby would seriously injured, because of the weight of the door and the speed de-- veloped in its downward movement. To guard against such an accident, not withstanding that likelihood of such occurring is very remote, I provide each of the wall angles 10 with a rack bar '37, extending throu hout the entire range o-f'movement of the ower door section 13, and utilize, as a part of the swivel connection between the door and the chains, or other flexible connections 16, a spring pressed pivotal dog 38 havin a heel to which a chain 16 is connected. Wit this construction, the load ofthe counterweight ahd of the door will overcome the normal tendency of the spring actin upon the do 38 to engage said dog'witht a rack bar 3 In other words, the arrangement of weights and connections is such that when the door is in proper condition, the d 38 will be held in a gositlon inoperative in re ationto the rack'37', at in the event of the breakage of either or both chains, the dogs will immediately be forced into engagement with the rack bars 37 and thus arrest downward movement of the oor.

It has been demonstrated in actual practice, that the thrust of the door sections toward the wall angle 10 and the rack bar 37 will ensure a proper continuin engagement of the dog 38 with a tooth of the rack, when said dog s once engaged therewith by the action of its spring.

The operation of the herein described self- 4 breaking canopy type door is substantially as follows In describing the o eration ofthe door of the invention, it wil be assumed that the door is in the full closed and locked position, as shown in ull lines in the drawings. With the arts in this position, the door will be suspended from the hinge pin 22, and by reason of the offset relation of this hinge pin with the plane of the inner face of the door,

there will be a constant tendency of the upper section to swing about the hinge pin 22 to the right, -Fi 2, which tendency will be resisted, however, 1y;the engagement of the latch members 28 wit the keepers 24.

When counterweights are used, as shown in the drawings, there will be constantly exerted upon the door, through the chains 16, a

lifting action applied adjacent the bottom of the lower section 13.

. When it is desired to open a door, it is merely necessary to disengage the latch members 28 from the keepers 24, which may be done by actuating the rock shaft 26 by means of the handle 27 or by merelyl raising one ofthe latch mem ers. Upon t e disen agement of the latch members from their ee ers, theupper door section 12 will imme iatel seek an equilibrium, swingmglinwardly of t e door 0 ening, or to the rig t, Fig. 2, the weight 0 the section 12 being suflicient to cause a similar turning movement of the lower section about the swivel connection between same and the flexible connections 16.

-The extent of this turning movement of the two sections may be governed, with n limits, by the extent to which the pivot pin 22 is'ofiset in relation to the door.

Since the upper door section may be five feet in height, or even more, with an offset of an inch or so the lower edge of this section may have a movement of three inches or more, which is adequate to effectively break the joint and to give a starting u ward imtus to both sections, accompani of course y the folding action characteristic of the the doors, the spec canopy type of door. The lower portion of the upper door section 12 naturally will swing beyond its point of equilibrium asthe latch members are released, and .will not be permitted a return movement.

If the counterweight31 be such as to exactly balance the doors when in the open position, the breaking action will be followed by a continuing opening movement of the door, which movement, however, will be a slow movement. The action of the upper section when breaking the joint appearsto give a starting impetus or impulse to the door, due to the inertia of the counterweight and the slight. but rapid, lift of the lower door section at the bottom thereof, which has the effect of momentarily creating sufficient slack in the chains 16 to permit a jar upon the door as the counterweight takes up this slack. This jar will accelerate the upward movement of the 'door sections immediately following the initial opening movement caused'by the swinging of the upper door section, above referred to. Of course, if the counterweight 31 has a capacity greater than that re' uired to exactly balance of theopening movement will be greater than with a close counterbalancing by means of the said counter weight. Whenthe door is once started, the movmg inertia of parts will continue the opening movement, and there will be some'acquired momentum, this, however, being no factor so far as the opening of the door is concerned.

It will be understood that a vertical pull or stress applied,through the chains 16 will cause the bottom of the lower section to move 1n a vertical line, and that the rollers 17 will resist the thrustimparted to this lower section during the opening movement'by the upper section at the hinges 14. This, however, is characteristic of allv canopy type doors. Of course, if desired, the operator may in crease the speed of operation of the door by pulling it toward him when actuating the rock shaft 26. This is not necessary, however, under ordinary conditions,but it may be done.

If a mechanical operator be used, such operator will merely supplement the action above referred to, which condition will always be present in the door if a counterweight be used. If, however, no counterweight be used, the mechanical operator. is relied upon solely to impart continuing opening move-. ment to the door.

When it is desired to close a door, it is merely necessary to grasp the strap 39, which is carried by all canopy type doors which are to be manually operated,'and to pull down upon the door with a short sharp action. As

upper door will develop a moving inertia, or will ac uire momentum, which, together with the weight ofthe lower section, will overcome h the 'counterbalancing action of: the weight 31, and thus cause a rapid continuin closing movement of the doors byan unfol in action. I This momentum will be sufficient to cause the upper door section 12 to pass its point of equilibrium to an extent to cau'sethe latch members 28 to engage. the co-, operating keepers24 and thus check a return movement of-the door such asfollows the release ofthe latch mechanism when openin the door, the striker 29 actuating theroc shaft to ensure such engagement of the latch members 28 with the keepers;

If the bottom or lower door section be fairly closely fitted to the threshold of the opening, the bottom of the door, in turning, may engage said threshold, but the elongated slot. 23' will permit the lifting of the whole door structure to compensate for this action,

Said slot, and the opening 35 between the purpose of preventing the hands of an attendant being injured in the event that he does so push the doors. The astragal completely covers the gap 35, and is spaced away fromthe upper door section so as to afiordclearance for the fingers in the event that an attendant should grasp the edge'ofothe astrag'al. The yieldability of the astragal is to preclude any possibility of the fingers or The space 35 and the hand' being pinched between same and the upper door section 12. v

The use of the solenoid 32 is merely a matter of convenience, it being possible to locate the switch 34 at any convenientpoint and thus permit the opening of the. doors without an attendantv being near the door. The effect of the action of the solenoid is the same as though the rock shaft 26 were manuallyoperated.

The action of the rack bar 37' and spring pressed dog 38' need not be described in detail. Such is merely an emergency safety device, and conditions are seldom such as to make it operative.

The essential characteristic of the invene tion is the construction by which the upper door section, by reason of its weightand manner of mounting same, has a constant tendency to initiate an opening movement of the door, which. tendency is restrained by a lock or latch. mechanism having, the mode of o ration herein referred to, and I intend to Letters Patent, is:

c aim such broadly.

It is not my intention, however, to limit the invention to the precise-details of construction shown in the drawings, it being apparent that such me be varied without departing from the spirit andscope of the invention.

Having described the invention, what I,

' bodying therem a lurahty of sections hinged claim as new and desire to have protected by L A self-breaking canopy type door embodying therein a plurality of sections hinged together at one face of the door, a pivotal su rt for the upper door section adjacent t e 'ntel of the door opening, the axis of which sup rt is offset from the plane of the door at t e face thereof opposite the hinged connection between the sections, a keeper adjacent the door jamb, a latch member carried by one of the door sections co-operating wit said keeper, said keeper and sad latch memswivel ber bein capable of relative movement in settin re easing the latch, guides above see jamb of the door, flexible connections pasinigmabout said guides and having a the lower section, and means capable of exerting a pull u A 11 said flexible connections.

,2. selfreaking canopy type door embodying therein a plurality of sections hinged together at one face of the door, hinge plates secured adjacent the lintel of a door ning, each having a socket portion projec therefrom so as to be 'oflset from the plane of the face of the door 0 posite the hinged connections between sai sections, a hinge'pin secured to said socket portion, hin straps en gmg said pins and secured o the upper .d oorsection, a keeper adj aoent the door jamb,

a latch member carried by one of the door sections eo-operatin with said keeper, said keeper and said late member being capable of relative movement in setting and releasing the latch, guides above each jamb of the door, flexible connections" passing about said guides and having a swivelling connection adjacent the bottom of thelower section, and

. means capable of exerting a pull upon said flegibk coliinf'ctions.

se canopytype door embodying therein a p urality of'sections hingedftogether at one 'face of the door, hinge plates secured "adjacent the lintel of a door opening, each having a socket portion projected therefrom so as to be ofiset from the lane of the face of the door opposite the h nged connections between said sections, a h nge pin secured-to said socket rtion, hinge straps each having .a vertica y elongated opemng through which a pin passes and secured to' the upper door section, a

keeper adjacent the door jamb, a latch member carried b one of the door sections cooperating =wit said-keeper, said keeper and g connection adjacent the bottom of mamas said latch memberbein capable of relative movement in setting an releasing the latch,

connections.

' 4. A self-breaking canopy type door emtogether at one ace of the door, a pivotal support for the up er door section adjacent the lintel of the goon opening, the axis of which support is ofisetfrom the plane of the door at the face thereof opposite the hinged connection between the sections, keepers adjacent the door jambs and the hinged connection between the door sections, latch members carried by one of the door sections c'o-operating with said keepers respectively, each said keeper and said atch member being ca able of relative movement in setting and re easing the latch, connections between said latch members, whereby they move in unison, guides above each jamb of the door, flexible connections fiassing about said guides and having a swive ing connection ad acent the bottom of. the lower section, and means capable of exerting a pull upon said flexible connections. p v

5. A self-breaking canopy type door embodying therein a fplurality of sections hinged together at one ace -of thedoor, aupivotal support for the upper door section acent the lintel of the door opening, the axis of which su port is offset from the plane of the doorat t e face thereof opposite the hinged connection between the sections, keepers adjacent the door jambs and the hinged connection between the door sections, a rock bar mounted upon one of said sections, ofiset latch. members carried by said rock bar and co-o rating respectively with said, keepers, gui es above each jamb of the door, flexible connections passing about said dos and having a swivelling connection a jacent the bottom of the lower section, and means cap able ofexerting a pull'upon said flexible v connections.

4 6. A self breaking canopy type doorembodying therein a plurality of sections hinged "connections between" said sections,'a hinge .pin secured to said socket ortion, hin straps engaging said pins an secured to t e upper door section, keepers adjacent the door jambs and the bin dconnection between the door sections, atch members carried by one of the door sections co-operatin with said kee ers respectively, each sai keeper and sai latch member being capable 65 the door at the ace thereof opposite each having a socketportion projecte therefrom so as to be ofiset from the plane of the face of the door opposite the hinged connections between said sections, a hinge pin secured to said'socke't portion, hin e straps each having a vertically elongate opening go'through which a pin passes and secured to the upper door section,keepers adjacent .the

door jambs and the hinged connection 'be-' tween the door sections, a rock bar mounted upon one of-said sections, ofiset latch members carried by said rock bar andco-operatin respectively with said kee ers, guides a ove each jamb of the door, exible connections passing about said uides and-having a swivelling connection a jacent the bottom of the lower section, and means capable of exerting a pull upon said flexible connections.

8. A selfebreaking canopy type door embodying therein a plurality of sections hinged together at one face of the door, the contig- 86 uous edges of said door sections being spaced apart to form a gap of suflicient width to prevent the pinching of thehand or fingers, a pivotal support for the upper door section adjacent the lintel of the door opening, the axis of which support is ofl'set from the plane of the door at the face thereof opposite the hinged connection between the sections, a

keeper adjacent the door jamb, a latch member carried by one of the door sections co-opcrating with said keeper, said kee er and said latch member bein' capable of re ative movement in setting an releasing the latch, guides above each jamb of the door, flexible connections passing about said guides and having so a; swivelling connection adjacent the bottom of the lower section, and means capable of exerting a pull u on said flexible connections.

9. A sel .bodying therein a lurality of sections hinged together at one ace of the door, the contiguous edges of said do'or sections being spaced apart to form a gap of suficient width to prevent the pinching of the hand or fingers. a yieldable astragal carried by one of sai sections u on the side thereof opposite to that at which the sections are hinged, a pivotalsupport for the up er door section adjacent the lintel of the oor opening, the axis of which support is ofi'set from the planefif brea ing canopy type door em connections passing about saidhinged connedtion between the sections, a keeper adjacent the door jamb, alatch member carried b one of the door sections cooperating wit said keeper, said keeper and said latch member being ca able of relative movement insetting and're easing the latch, guides above each jamb of the door, flexible connections passing-about said guides. and having a swivelling connection adjacent the bottom of the lower section, and means capa-.

ble of exerting a pull upon said flexible connections;

10. A self-breaking canopy type door embodying' therein a plurality of sections hinged together at one face of thedoor, the conti'guous edges, of said door sections being spaced apart to form a gap of'sufficient widt to prevent the pinching of the hand or fingers, hinge plates secured adjacent the lintel of a door 0 ening, each having a socket portion projected therefrom so as to be voffset from the plane of the faceof the door opposite the. hinged connections between said sections, a

hinge pin secured to said socket port-ion, hinge straps engaging said pins and secured to the upper door section, a keeper ad acent the door jamb, a latch member carried by one' of the door sections co-operating with said keeper, said keeper and said latch member being capable of relative movement in settingand releasing the latch, guides above, each amb of the door, flexible connections passing about said guides and having a swivelling connection adjacent the bottont oithe lower section, and means capable of exerting a pull upon said flexible connections;

11. A self-breaking canopy type door embodying therein a lurality of sections hinged together at one ace of the door, the contiguous edges of said door sections belng spaced apart to form a gap of suflicient width to prevent the pinching of the hand or fingers, hinge plates secured adjacent the lintel of a door opening, each having a'socket portion projected therefrom so as to be 'ofiset from the plane of the face of the door opposite the hinged connections between said sections, a hinge pin secured to said socket portion, hinge straps on aging said ins and secured to the upper oor section, eepers adjacent the door jambs and the hinged connection between the door sections, latch mem -v bers carried by one of the door sections cooperating with said keepers'respectively, each said keeper and said latch member being capable of relative "movement in setting and releasing the latch, connections between said latch members,gwherebv they move in unison, guides above each jamb of the door, flexible ides and having a swivelling connection a jacent the bottom of the lower section, and means'ca pable of exerting a pull upon said flexible connections.

12. Aself-breaking canopyltype'door embodying therein a plurality of sections hinged together at one face of the door, the contiguous edges of said door sections being spaced apart to form a gap of suflicient width to prevent the pinching of the hand or fin rs, a yieldable' astragal carried by one 0 said sections upon the side thereof opposite to that at which the sections are hinged, hinge plates secured adjacent'the lintel of a door openin each having asocket portion projected t erefrom so as to.

be oifset from the plane of'tiie face of the door opposite the hinged connections beof the lower 'section, and means capable of the exerting tions.

13. A self-breaking cano y type door embodying therein a plura ity of sections hinged together at one face of the door, hinge plates secured adjacent the lintel of a door opening,each,havin'g a socket portion a pull upon said flexible connecprojected therefrom so as to be offset from the pllfilneof the face of the door op 'te ed connections between sa sections, a 'nge pin secured to said socket portion, hinge straps engaging said pins and secured to'the up r door section, keepers adjacent the door ambs and the hinged connection between the door sections, latch members carriedfiiy 0:110k0f the door sectiolns co-o crating wit sai eepers respective each said keeper and said latch member ing ca able of relative inovementin setting andre easing the latch connections'between said latch membersfwh unison, asolenoid adjacent one of said latches,-an extension u n'the core of said solenoid engageable-" with a-l'atch member,

guides above each jamb ofthe door, flexible connections passing about said des and having a swivelling connection a' jacent the bottom of the lower section", and means capable of exerting a pullupon said flexible connections. -i

. 14. A self-breakingPcano y type door-emsections co-operati v keeper and said late member being capable said fguides, a vertically exten pressed latch dog having a swivelling apart to form a ereby they move in her, 1929.

tions, a keeper adjacent the door amb, a latch member carried b g wit said keeper, said the door fiexi 1e connections gassing about adjacent each side of the door, 'a spring coning rack bar' one of t e door nection. adjacent the bottom-of each side of the lower section, 'and a counterweight, one

attached to end-.of said connections be' said dog and the otherend t ereof to said counterwei ht.

15. A" sel -breaking canopy type door embod "ng therein vertically extending wall es, an angle at one end of'each of said a wa angles, a keeper carried by one of the said last named an les,=

flanges of each 0 w P v the hntel of a door'opening,'each having a socket portion projected therefrom so as to be ofiset from t e plane of the face of said door section, a hinge pin secured to 'sa1d socket Ho'rtion, hi .straps each havm a vertica y elonga openin through which a pin passes, secured to sai door section, a lower door section at the face of said upper door section-opposite to that at:

which said'hin e plate is secured, the .contiguous edges -0 said sections being s aced p of suficient wi th to prevent the pinchm of the hand'or fingers,

a yieldable astra a carried by said lower,

section opposite t e hinge connecting said sections, and extending across and gap, a

rock bar' mounted 'upon saidlower section adjacent the hingedco'nnection between said atc sections, ofiset h members carried by said rock barai d co-operating respectivel with said kee rs, in

of said angle ars, exible connections paming aboutsaidsheaves and having a swivelling connection adjacent the bottom of thelower section a thrust roller adjacent the d lower section, and a counterbottom of sai weight acting u n said flexible connections.

In witness in ereof I have hereunto affixed my ROBERT s; rE'ELLE.

bodying therein a ,iplura ty of sections v i pivotal su port for the upper door section hinged together at one face of the door, a

'gnature this 28th day of Septem--- r door section, hinge plates a V0 ide sheaves above eac 

